Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation

A system to integrate microwave imaging with optical colonoscopy is presented. The overarching goal is to improve the prevention and early diagnosis of one of the main health and economic burdens of an increasingly aging population, i.e., colorectal cancer. For a colonoscopy, the gold standard for c...

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Autores principales:	Alejandra Garrido, Roberto Sont, Walid Dghoughi, Sergi Marcoval, Jordi Romeu, Gloria Fernandez-Esparrach, Ignasi Belda, Marta Guardiola
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Backpropagation algorithms endoscopes medical diagnostic imaging microwave antenna arrays microwave imaging Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/1d1a4e1d2f8441a4aca3b9d80afbe0cc
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spelling	oai:doaj.org-article:1d1a4e1d2f8441a4aca3b9d80afbe0cc2021-11-18T00:09:58ZAutomatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation2169-353610.1109/ACCESS.2021.3124019https://doaj.org/article/1d1a4e1d2f8441a4aca3b9d80afbe0cc2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9592774/https://doaj.org/toc/2169-3536A system to integrate microwave imaging with optical colonoscopy is presented. The overarching goal is to improve the prevention and early diagnosis of one of the main health and economic burdens of an increasingly aging population, i.e., colorectal cancer. For a colonoscopy, the gold standard for colorectal cancer diagnosis, 22% of polyps are not detected, and the risk of cancer after a negative colonoscopy can be up to 7.9%. To remedy this, a microwave imaging system able to generate an alarm when a polyp is detected is designed, manufactured and validated with a colon phantom composed of tissue-mimicking oil-gelatin materials reproducing the anatomy and dielectric properties of a human colon with a polyp. The acquisition was performed by a miniaturized ring-shaped switched array of 16 antennas attachable at the tip of a conventional colonoscope. This has been conceived to satisfy endoscopy size restrictions, patient safety and intercompatibility with current clinical practice. A Modified Monofocusing imaging method preceded by a previous frame average subtraction as a calibration technique shows a perfect detection of a 10-mm polyp (100% sensitivity and specificity) in the eight analyzed trajectories. The phantom results demonstrate the feasibility of the system in future preclinical trials.Alejandra GarridoRoberto SontWalid DghoughiSergi MarcovalJordi RomeuGloria Fernandez-EsparrachIgnasi BeldaMarta GuardiolaIEEEarticleBackpropagation algorithmsendoscopesmedical diagnostic imagingmicrowave antenna arraysmicrowave imagingElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 148048-148059 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Backpropagation algorithms endoscopes medical diagnostic imaging microwave antenna arrays microwave imaging Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Backpropagation algorithms endoscopes medical diagnostic imaging microwave antenna arrays microwave imaging Electrical engineering. Electronics. Nuclear engineering TK1-9971 Alejandra Garrido Roberto Sont Walid Dghoughi Sergi Marcoval Jordi Romeu Gloria Fernandez-Esparrach Ignasi Belda Marta Guardiola Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation
description	A system to integrate microwave imaging with optical colonoscopy is presented. The overarching goal is to improve the prevention and early diagnosis of one of the main health and economic burdens of an increasingly aging population, i.e., colorectal cancer. For a colonoscopy, the gold standard for colorectal cancer diagnosis, 22% of polyps are not detected, and the risk of cancer after a negative colonoscopy can be up to 7.9%. To remedy this, a microwave imaging system able to generate an alarm when a polyp is detected is designed, manufactured and validated with a colon phantom composed of tissue-mimicking oil-gelatin materials reproducing the anatomy and dielectric properties of a human colon with a polyp. The acquisition was performed by a miniaturized ring-shaped switched array of 16 antennas attachable at the tip of a conventional colonoscope. This has been conceived to satisfy endoscopy size restrictions, patient safety and intercompatibility with current clinical practice. A Modified Monofocusing imaging method preceded by a previous frame average subtraction as a calibration technique shows a perfect detection of a 10-mm polyp (100% sensitivity and specificity) in the eight analyzed trajectories. The phantom results demonstrate the feasibility of the system in future preclinical trials.
format	article
author	Alejandra Garrido Roberto Sont Walid Dghoughi Sergi Marcoval Jordi Romeu Gloria Fernandez-Esparrach Ignasi Belda Marta Guardiola
author_facet	Alejandra Garrido Roberto Sont Walid Dghoughi Sergi Marcoval Jordi Romeu Gloria Fernandez-Esparrach Ignasi Belda Marta Guardiola
author_sort	Alejandra Garrido
title	Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation
title_short	Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation
title_full	Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation
title_fullStr	Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation
title_full_unstemmed	Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation
title_sort	automatic polyp detection using microwave endoscopy for colorectal cancer prevention and early detection: phantom validation
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/1d1a4e1d2f8441a4aca3b9d80afbe0cc
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Automatic Polyp Detection Using Microwave Endoscopy for Colorectal Cancer Prevention and Early Detection: Phantom Validation

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